HDPE-43-0250 Black 1/4 .170 .040 250 300 1200 1-1/2 1.1 HDPE-43-0500 Black 1/4 .170 .040 500 300 1200 1-1/2 1.1 HDPE-64-0250 Black 3/8 .250 .062 250 300 1200 2-1/2 2.5 HDPE-64-0500 Black 3/8 .250 .062 500 300 1200 2-1/2 2.5 Nomenclature Order by tubing part number and name. Example: FR PE 4 — 0500 Flame Resistant Polyethylene 1/4" (4/16) Tube